The detection capability of the oxygen sensor and A/F (air-fuel) ratio sensor decline at low temperatures (under 400
Automotive Engine
VVTL-i (Variable Valve Timing and Lift-intelligent)
The VVTL-i system is based on the VVT-i system and employs a cam changeover mechanism to change the amount of the intake and exhaust valve lift. This makes it possible to attain high power without affecting Read more VVTL-i (Variable Valve Timing and Lift-intelligent)
VT-i (Variable Valve Timing-intelligent)
Generally, the valve timing is fixed, but the VVT-i system uses the hydraulic pressure to shift the intake camshaft rotation and vary the valve timing. This makes it possible to increase output, improve Read more VT-i (Variable Valve Timing-intelligent)
Electronic Throttle Control System-intelligent Other Controls
The ETCS-i controls the throttle valve opening angle to the optimum amount in accordance with the amount which the accelerator pedal is depressed.
1. Normal-mode control, Power-mode control and Snowmode Read more Electronic Throttle Control System-intelligent Other Controls
Throttle body construction and operation
the throttle body consists of a throttle valve, throttle position sensor that detects the throttle valve opening, throttle control motor that opens and closes the throttle valve, and a return spring that Read more Throttle body construction and operation
ETCS-i (Electronic Throttle Control System-intelligent)
The ETCS-i (Electronic Throttle Control System-intelligent) is a system that uses a computer to electrically control the throttle valve opening. Conventional throttle valve opening has been controlled Read more ETCS-i (Electronic Throttle Control System-intelligent)
Function of ISC Operation of Rotary Solenoid Type
1. Staring control
When the engine ECU receives a starter signal (STA), it determines that the engine is starting and opens the ISCV to improve startability. The ISCV opening is controlled according to Read more Function of ISC Operation of Rotary Solenoid Type
The ISC (Idle Speed Control) system
The ISC (Idle Speed Control) system is provided with a circuit that bypasses the throttle valve, and the air volume drawn in from the bypass circuit is controlled by the ISCV (Idle Speed Control Valve). Read more The ISC (Idle Speed Control) system
Maximum and Minimum Advance Angle Control
When there is trouble with the predetermined ignition timing from the initial ignition timing, basic ignition advance angle and corrective ignition advance angle, it will affect the engine performance Read more Maximum and Minimum Advance Angle Control
Corrective Ignition Advance Control
1. Warm-up correction
An advanced angle is used for the ignition timing when the coolant temperature is low to improve drivability. Some engine models conduct correction advancing in response to the intake Read more Corrective Ignition Advance Control